Textile web for cleaning purposes
CA 2229398 C · Owner: Laun, Heinrich · Inventors: Laun, Heinrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A textile web material for cleaning purposes is disclosed which includes a fleece having protruding textured surface areas, whereby the textured surface areas are provided on both faces of the web material and cover the full surface of the web or parts thereof and whereby the base fleece includes textured surface areas on both sides which are staggered and produced by structure needling. The textured surface areas can be spaced apart at a distance which corresponds at least to the width of the textured surface areas on the opposite side of the web, or the fleece can be provided with at least two mutually lined layers of a fleece, provided with textured surface areas on one side.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 12, 1998 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.